Improvement in fire-extinguishers



A. H. A'NGELL. Fire-Extinguishers.

No.\l54,539. i Parentedsepmnam.

f /@gig ABNER H. .ANGELL, OF NEW-YOBK,

PATENT OFFICE.

N. Y., AssIGNoE To ErMsELE AND FRANK FARWELL, OF SAME PLACE.

IMPROVEMENT IN FIRE-.EXTINGUISHERS- Specification forming part ofLetters Patent No. 154,539, dated September 1, 1874,; application liledJuly 10,1814.

To all l,whom -itrmafy concern:

Bc it known that I, ABNER H. ANGELL, of Y the city of New York, countyand State of New York, have invented a new and useful Improvement inAcid-Bottles for Fire-Extinguishers, reference being had to theaccompanying dr( wings forming part of this specigas is generatedvby theaction of an acid upon a carbonate, and in which the acid is liberatedfor action upon the carbonate by breaking the bott-le containing it; andconsists in a bottle having a tapering recess made in its base, intowhich is fitted a correspondingshaped plug or wedge,ywhereby, by forcingthe bottle upon thel plu g, the walls of the base are spread asunder andthe bottle broken.

Fig. 2 represents a glass bottle ot ordinary general construction. lnthe base of this bottie. is formed a tapering recess, A, extending,preferably, entirely across the bottle. This is done in the manufacture,by pressing the glass while hot into the desired shape, or by aproperly-formed mold. Fig, l shows a View of the bottle and Wedge turneda quarter round from the position seen in Fig. 2. B is the frustum of awedge, made, prefer( bly, of metal. 'lhe inclination of its sides shouldcorrespond to that of the sides of the recess. The base is wider thanthe base of the recess Aand there is some space between the top ofthefrustum and the upper surfaceor angle of the recess. rlhis bottle beingset down upon this Wedge-shaped plug, the latter f1tting into therecess, it is evident that, by the pressure upon the top of the bottle,the Wedge will be driven into the recess, thereby spreading the Walls ofthe recess asunder and breaking the bottle.

The wedge may, for convenience of holding the bottle in place upon itwhen in the extinguisher, have standards or arms C D secured to itsends, the bottle being placed between them. These standards extendupward and are secured to the apparatus usually employed to apply thepressure to the top ot' the bottle,

lWhich is ordinarily a screw-rod extending` through the top of theextinguisher.

I do not limit myself to the precise form of the recess and plug hereshown and described. Itis only essential that they shall be so formed,

relatively, that, pressing the bottle down upon the plug, the latterwill act as awedge to spread asunder the base of the bottle, and therebybreak it. Y

The combination of a bottle having a tapering recess in its base with atapering plug placed in the said recess, substantially as and for thepurpose specified.

Witness my hand this 7 th day of July, 1874.

ABNER H. ANGELL.

Witnesses:

B. S. CLARK, I. S. MAcKENzrE.

